9.4-μm CO 2 laser Stark spectroscopy of the ν 9 fundamental band of methylene fluoride
Abstract
The CO 2 laser Stark spectroscopy was applied to methylene fluoride, an asymmetric-top molecule with the only nonvanishing dipole moment parallel to the b-principal axis. Stark resonances due to the ν9 (antisymmetric CF stretching) fundamental band were assigned with the aid of laser-microwave double resonance in the presence of a Stark field. A least-squares analysis of the Stark spectrum yielded the band origin, ν0 = 32 681 172.3 ± 3.0 MHz (1090.1266 ± 0.0001 cm -1), and the dipole moments μ″ = 1.9785 ± 0.0021 D and μ' = 2.0100 ± 0.0014 D for the ground and ν9 excited vibrational states, respectively.
- Publication:
-
Journal of Molecular Spectroscopy
- Pub Date:
- October 1977
- DOI:
- 10.1016/0022-2852(77)90428-3
- Bibcode:
- 1977JMoSp..68..125K